Clutch Master Cylinder-Removal, Overhaul And Installation - Jeep cherokee 1989 Owner's Manual

The pilot bearing incorporates an O-ring seal which
cannot be replaced separately. If there is any indication that the
seal is leaking, or if the bearing is dry, replace
must be installed with the seal towards the transmission.
ing into the recess with an alignment tool or bushing driver. The seal
must face out and the bearing must go in perfectly straight (see illus-
trations).
11 Install the clutch components, transmission and all other com-
ponents removed previously, tightening all fasteners properly.
-
Clutch master cylinder
6
Note: Before beginning this procedure, contact localparts stores and
dealer service departments concerning the purchase of a rebuild kit
or a new master cylinder. Availability and cost of the necessary parts
may dictate whether the cylinder is rebuilt or replaced with a new one.
in Step 12 before purchasing parts.
Removal
Refer to illustrations 6 . 3 and 6.5
1 Disconnect the cable from the negative battery terminal.
2 Remove the clutch master cylinder reservoir cap, and, using a suc-
tion gun or large syringe, suck out as much fluid as possible.
3 Disconnect the hydraulic line from the cylinder, using a flare nut
wrench, if available. Some models have a separable reservoir, which,
when removed, makes access to the fitting much easier (see illus-
tration).
4 Remove the lower master cylinder mounting nut.
5 Working under the dash, disconnect the pushrod from the clutch
pedal. It is retained by a cotter pin, plastic washer and spring washer
6.3 To avoid rounding off the corners
of the fitting nut (arrow), use a flare nut
wrench when loosening
The Motor Manual Guy
Chapter 8 Clutch and drivetrain
BEARING SEAL
MUST FACE
The bearing
it.
removal, overhaul and installation
6.5 Remove the cotter pin (1) (barely
visible i n this photo), plastic washer and
spring washer, then disconnect the pushrod
it
from the clutch pedal pin; next, hold the upper
mounting nut'(2) with a wrench while an
assistant unscrews the mounting bolt from the
engine side of the firewall
Tap the bearing in using a bushing driver or a socket
(see illustration).
6 Also from under the dash, remove the cylinder upper mounting
nut (see illustration 6.5). Rather than attempt to loosen the nut from
this position, it is much easier to simply hold the nut while an assis-
tant unscrews the bolt from the engine side of the firewall.
7 Pull the cylinder out of the hole in the firewall. Be careful not t o
let any of the fluid drip onto the vehicle's paint, as it will damage it.
Overhaul
Refer to illustrations 6.10, 6.1 1, 6.14a and 6.14b
8 On models with a removable reservoir, detach the reservoir from
the cylinder body by loosening the clamp.
9 Mount the cylinder in a vise, with the vise jaws clamping on the
mounting flange. It's a good idea to line the jaws of the vise with wood
or rags to prevent damage t o the flange surface.
10 Pry the dust boot from the cylinder. Push in on the pushrod to
depress the plunger, then remove the snap-ring with a pair of snap-
ring pliers (see illustration). Remove the pushrod and boot. Discard
the snap-ring.
6.10
remove the snap-ring with a pair of
8-5
Push in on the pushrod and
snap-ring pliers